MAHLE RTI ELF-1 - Manual (Page 6)

Page 3
INITIAL SET UP
It is essential that ELF-1 is set up properly each time it is used. Failure to adhere to
the following instructions will result in inaccurate diagnosis and potential damage
(and possible destruction) to individual systems and components.
The Pressure Regulator is adjustable from a minimum of zero PSI to a maximum of
15 PSI. Extreme care must be taken to ensure that pressure settings in all modes
are appropriate for the system or component being tested.
Always turn the Pressure Regulator all the way counter-clockwise to zero before
connecting the air (or nitrogen) supply and before putting ELF-1 away.
CALIBRATION AND INTERNAL LEAK-CHECK
It is necessary to establish that there are no leaks inside ELF-1 before starting to locate a leak in an
external system.
Ensure that the Pressure Regulator is turned all the way counter-clockwise. Pull the Pressure Regulator
control knob away from the cabinet and turn.
Attach the battery clips to the battery and connect to shop air (or nitrogen) supply.
Set the Timer to 5 minutes.
Press the 4-15 PSI Pressure Selector (CALIBRATE is printed under the selector as a reminder).
Place finger over end of the clear hose and slowly turn the Pressure Regulator clockwise until the
pressure on the Pressure Gauge indicates 10 PSI.
If the pressure rises above 10 PSI, release air from hose by momentarily lifting finger. Turn the
Pressure Regulator counter-clockwise one turn and start again.
While a very small amount of leakage is allowed, the pressure must remain steady for the remainder
of the timer setting. ELF-1 is ready for use once this is accomplished. Should pressure drop too quickly,
excessive internal leakage is indicated.
MODES OF OPERATION
1 PSI MODE
This mode is for basic testing of evaporative emissions system integrity. Most manufacturers label their
EVAP systems with a 1 PSI maximum warning. When this mode is selected, pressure is internally
diverted through the 1 PSI cut-out switch. Flow is automatically stopped once 1 PSI is reached within
ELF-1 and the system being tested. More pressure is not applied until the 1 PSI pressure switch resets.
The pressure switch resets when the pressure drops to approximately 0.8 PSI. ELF-1 will begin
supplying pressure again once the pressure drops below this value.
The Flow Indicator will be illuminated whenever flow is enabled. It goes off when the mode pressure
limit is reached.
ELF-1 ships with 2 ounces of Fog Chemical inside the unit. A 4 ounce bottle
for refilling also ships with the unit. DO NOT ADD any Fog Chemical until
needed (when fog is not produced). Refer to the instructions on Page 7.